<template>
  <div class="main">
    <a-form id="formLogin" class="user-layout-login" ref="formLogin" :form="form" @submit="handleSubmit">
      <a-tabs
        :activeKey="customActiveKey"
        :tabBarStyle="{ textAlign: 'center', borderBottom: 'unset' }"
        @change="handleTabClick"
      >
        <a-tab-pane key="account" tab="账号密码登录">
          <a-alert v-if="isLoginError" type="error" showIcon style="margin-bottom: 24px;" message="账户或密码错误" />
          <a-form-item>
            <a-input size="large" type="text" placeholder="账户: admin" v-decorator="decorator.username">
              <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>

          <a-form-item>
            <a-input
              size="large"
              type="password"
              autocomplete="false"
              placeholder="密码: admin or ant.design"
              v-decorator="decorator.password"
            >
              <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-input size="large" type="text" autocomplete="off" v-decorator="decorator.charCaptcha">
              <a-icon slot="prefix" type="safety" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
            <img :src="captchaPath" @click="getCaptcha()" />
          </a-form-item>
        </a-tab-pane>
        <a-tab-pane key="mobile" tab="手机号登录">
          <a-form-item>
            <a-input size="large" type="text" placeholder="手机号" v-decorator="decorator.mobile">
              <a-icon slot="prefix" type="mobile" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>

          <a-row :gutter="16">
            <a-col class="gutter-row" :span="16">
              <a-form-item>
                <a-input size="large" type="text" placeholder="验证码" v-decorator="decorator.smsCaptcha">
                  <a-icon slot="prefix" type="mail" :style="{ color: 'rgba(0,0,0,.25)' }" />
                </a-input>
              </a-form-item>
            </a-col>
            <a-col class="gutter-row" :span="8">
              <a-button
                class="getCaptcha"
                tabindex="-1"
                :disabled="state.smsSendBtn"
                @click.stop.prevent="getCaptcha"
                v-text="(!state.smsSendBtn && '获取验证码') || state.time + ' s'"
              ></a-button>
            </a-col>
          </a-row>
        </a-tab-pane>
      </a-tabs>

      <a-form-item>
        <a-checkbox v-decorator="['rememberMe']">自动登录</a-checkbox>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          htmlType="submit"
          class="login-button"
          :loading="state.loginBtn"
          :disabled="state.loginBtn"
          >确定
        </a-button>
      </a-form-item>

      <div class="user-login-other">
        <span>其他登录方式</span>
        <a>
          <a-icon class="item-icon" type="alipay-circle"></a-icon>
        </a>
        <a>
          <a-icon class="item-icon" type="taobao-circle"></a-icon>
        </a>
        <a>
          <a-icon class="item-icon" type="weibo-circle"></a-icon>
        </a>
      </div>
    </a-form>
  </div>
</template>

<script>
import { mapActions } from 'vuex'
import { getUUID, timeFix } from '@/utils/util'
import { getSmsCaptcha } from '@/api/security'
import { isEmail } from '../../utils/validate'

export default {
  components: {},
  data() {
    return {
      customActiveKey: 'account', // 登录方式 切换
      captchaPath: '', // 验证码图片地址
      uuid: '', // 验证码uuid
      loginBtn: false,
      // 登录方式: 0 email, 1 username, 2 mobile phone
      loginType: 0,
      isLoginError: false,
      requiredTwoStepCaptcha: false,
      stepCaptchaVisible: false,
      form: this.$form.createForm(this),
      state: {
        time: 60,
        loginBtn: false,
        // login type: 0 email, 1 username, 2 telephone
        loginType: 0,
        smsSendBtn: false
      },
      // 表单校验规则
      decorator: {
        username: [
          'username',
          {
            rules: [
              {
                required: true,
                message: '请输入帐户名或邮箱地址'
              },
              { validator: this.handleUsernameOrEmail }
            ],
            validateTrigger: 'change'
          }
        ],
        password: ['password', { rules: [{ required: true, message: '请输入密码' }], validateTrigger: 'blur' }],
        charCaptcha: ['charCaptcha', { rules: [{ required: true, message: '请输入验证码' }], validateTrigger: 'blur' }],
        smsCaptcha: ['smsCaptcha', { rules: [{ required: true, message: '请输入验证码' }], validateTrigger: 'blur' }],
        mobile: [
          'mobile',
          {
            rules: [{ required: true, pattern: /^1[34578]\d{9}$/, message: '请输入正确的手机号' }],
            validateTrigger: 'change'
          }
        ]
      }
    }
  },
  created() {
    this.getCharCaptcha()
  },
  methods: {
    ...mapActions(['Login', 'Logout']),
    // 获取验证码
    getCaptcha() {
      if (this.customActiveKey === 'account') {
        this.getCharCaptcha()
      }
      if (this.customActiveKey === 'mobile') {
        this.getMobileCaptcha()
      }
    },
    // 校验: 用户名或邮箱
    handleUsernameOrEmail(rule, value, callback) {
      const { state } = this
      if (isEmail(value)) {
        state.loginType = 0
      } else {
        state.loginType = 1
      }
      callback()
    },
    // 切换登录方式
    handleTabClick(key) {
      this.customActiveKey = key
      // this.form.resetFields()
    },
    // 登录
    handleSubmit(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state,
        customActiveKey,
        Login
      } = this

      state.loginBtn = true

      const validateFieldsKey =
        customActiveKey === 'account' ? ['username', 'password', 'charCaptcha'] : ['mobile', 'smsCaptcha']

      validateFields(validateFieldsKey, { force: true }, (err, values) => {
        if (!err) {
          const loginParams = { ...values, uuid: this.uuid, loginType: state.loginType }
          delete loginParams.username
          loginParams[!state.loginType ? 'email' : 'username'] = values.username
          Login(loginParams)
            .then(res => this.loginSuccess(res))
            .catch(err => this.requestFailed(err))
            .finally(() => {
              state.loginBtn = false
            })
        } else {
          setTimeout(() => {
            state.loginBtn = false
          }, 600)
        }
      })
    },
    // 获取字符验证码
    getCharCaptcha() {
      this.uuid = getUUID()
      this.captchaPath = `${process.env.VUE_APP_API_BASE_URL}/captcha?uuid=${this.uuid}`
    },
    // 获取短信验证码
    getMobileCaptcha(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state
      } = this

      validateFields(['mobile'], { force: true }, (err, values) => {
        if (!err) {
          state.smsSendBtn = true

          const interval = window.setInterval(() => {
            if (state.time-- <= 0) {
              state.time = 60
              state.smsSendBtn = false
              window.clearInterval(interval)
            }
          }, 1000)

          const hide = this.$message.loading('验证码发送中..', 0)
          getSmsCaptcha({ mobile: values.mobile })
            .then(res => {
              setTimeout(hide, 2500)
              this.$notification['success']({
                message: '提示',
                description: '验证码获取成功，您的验证码为：' + res.result.captcha,
                duration: 8
              })
            })
            .catch(err => {
              setTimeout(hide, 1)
              clearInterval(interval)
              state.time = 60
              state.smsSendBtn = false
              this.requestFailed(err)
            })
        }
      })
    },
    stepCaptchaSuccess() {
      this.loginSuccess()
    },
    stepCaptchaCancel() {
      this.Logout().then(() => {
        this.loginBtn = false
        this.stepCaptchaVisible = false
      })
    },
    loginSuccess(res) {
      console.log(res)
      // check res.homePage define, set $router.push name res.homePage
      // Why not enter onComplete
      /*
      this.$router.push({ name: 'analysis' }, () => {
        console.log('onComplete')
        this.$notification.success({
          message: '欢迎',
          description: `${timeFix()}，欢迎回来`
        })
      })
      */
      this.$router.push({ path: '/dashboard' })
      // 延迟 1 秒显示欢迎信息
      setTimeout(() => {
        this.$notification.success({
          message: '欢迎',
          description: `${timeFix()}，欢迎回来`
        })
      }, 1000)
      this.isLoginError = false
    },
    requestFailed(err) {
      this.isLoginError = true
      this.$notification['error']({
        message: '错误',
        description: ((err.response || {}).data || {}).message || '请求出现错误，请稍后再试',
        duration: 4
      })
    }
  }
}
</script>

<style lang="less" scoped>
.user-layout-login {
  label {
    font-size: 14px;
  }

  .getCaptcha {
    display: block;
    width: 100%;
    height: 40px;
  }

  button.login-button {
    padding: 0 15px;
    font-size: 16px;
    height: 40px;
    width: 100%;
  }

  .user-login-other {
    text-align: left;
    margin-top: 24px;
    line-height: 22px;

    .item-icon {
      font-size: 24px;
      color: rgba(0, 0, 0, 0.2);
      margin-left: 16px;
      vertical-align: middle;
      cursor: pointer;
      transition: color 0.3s;

      &:hover {
        color: #1890ff;
      }
    }
  }
}
</style>
